bollman



(No Model.)

, J. W. BOLLMAN.

PRESERVING KETTLE.

Patented Aug. 9, 1881v ---I NVENTCIFT I Nrrn TATES ATENT Erica.

JOHN \V. BOLLMAN, OF BALTIMORE, MARYLAND, ASSIGNOR OF ONE-HALF TO WENDEL BOLLMAN, OF SAME PLACE.

PRESERVlNG-KETTLE.

SPECIFICATION formingpart of Letters Patent No. 245,437, dated August 9, 1881.

Application filed May 20, 1881.

To all whom it may concern:

Be it known that I, JOHN W. BOLLMAN, ot' the city of Baltimore, and State of Maryland, have invented certain Improvements in Preserving-Kettles, of which the following is a specification.

This invention relates to certain improvements in a kettle to be used in the process of preserving canned goods; and it consists in 19 providing the hinged top or cover of the kettle with a counterbalancingweight to facilitate the elevation of the cover after the removal ot' the bolts which secure the same to the body of the apparatus.

5 It further consists in combining with the counterbalanced cover an adjustable hinge for the same, whereby the wear of the rubbingsurt'accs, which is increased by the addition of the oounterpoise, may be taken up,'and the 20 pressure of the head on all parts of the gasket forming thejoint equalized.

In the further description of my said invention which follows reference is made to the accompanying drawings, forming a part hereof, and in which- Figure I is an exterior elevation of the improved kettle. Fig. II is a plan of the same. Fig. III is a sectional view of a part of the invention on an enlarged scale.

Similar letters of reference indicate similar parts in all the views.

A is the body, and B is the hinged lid, of the kettle. The hinge proper consists of two members, one, a, forming a part of the lid, and the (N0 model.)

other, I), a part of the body, and the said mcmhers are connected by means of a bolt or pin,

0. The hole d in the member a of the liingeis elongated and a block, 0, fitted therein. The bolt 0r pin 0 is in contact with the under side of the block 0, and the vertical position of the 4 block and thelid near to the hinge is adjusted by means of a screw-bolt, f, as shown in the drawings. The bolt fis turned through the medium of a hand-wheel, g.

0 is a lever secured to the top of thelid and to the member a. of the hinge, to which a counterbalancing-weigh t, D, is fastened in any suitable mauner. The'weightD is adjusted on the lever so as to counterpoise the lid B; consequently the lid may be opened without apply- 5 ing thereto tackle or any other devices coninionly used in raising heavy weights.

The employment of a connterpoise on the hinged lid necessarily increases the weight on the rubbing surfaces of the hinge, and if no means were used to take up wear of the hinge, in view of theincreased friction, the portion of the lid near to the hinge 'would crush in the packing material which forms the joint.

I claim as my invention In a preserving-kettle, the lid thereof, provided with a counterhalancing-weight or counterpoise and adjustably hinged to the body, substantially as and for the purpose specified.

' JOHN W. BOLLMAN.

Witnesses:

E. O. MILLER, 1%. W. CARR. 

